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Single Variable Calculus

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Understanding Critical Points

SVCALC-YGNCFX

For a function $f(x)$, a critical point $c$ must have which property?

A

$f'(c)=0$

B

$f(c)=0$

C

$f'(c)$ is defined

D

$f'(c)$ is undefined

E

$f(c)$ is defined